TMZ and D-AMZ Automatic Valve w/ Loss of Pressure Shutdown & Override

3.Identify valves which can be supplied meeting the air intake hose bore diameter where the valve will be mounted.

4.Generally, when more than one valve meets all requirements,
select the larger valve size to minimize engine air intake
restriction.

Refer to datasheets for detailed information.

Automatic & Loss of Pressure With Manual Start/Stop

Engine Power at Rated Speed

Air Intake Hose Bore

Naturally Aspirated

Turbocharged

Min

Max

Air Filter

kW

kW

mm

mm

TMZ (Bendix type) w/ ¾” (21mm) Deep Flame Trap Housing

TMZ-121

TMZ-125

7.5 - 38

7.5 - 32

40

70

TMZ-122

TMZ-126

15 - 54

15 - 45

51

80

TMZ-123

TMZ-127

22 - 72

22 - 60

57

83

TMZ-124

TMZ-128

30 - 93

30 - 78

64

96

TMZ (Bendix type) w/ 1½” (40mm) Deep Flame Trap Housing

TMZ-221

TMZ-225

7.5 - 38

7.5 - 32

40

70

TMZ-222

TMZ-226

15 - 54

15 - 45

51

80

TMZ-223

TMZ-227

22 - 72

22 - 60

57

83

TMZ-224

TMZ-228

30 - 93

30 - 78

64

96

TMZ (Bendix type)

TMZ-131

n/a

7.5 - 38

7.5 - 32

40

70

TMZ-132

n/a

15 - 54

15 - 45

51

80

TMZ-133

n/a

22 - 72

22 - 60

57

83

TMZ-134

n/a

30 - 93

30 - 78

64

96

TMZ-301

n/a

40 - 120

40 - 100

70

102

TMZ-302

n/a

50 - 179

50 - 149

70

108

D-AMZ (Spindle type)

D92-AMZ

n/a

80 - 101

76

115

D92S-AMZ

n/a

102 - 190

76

115

D102-AMZ

n/a

100 - 123

89

115

D102S-AMZ

n/a

124 - 250

89

115

D121-AMZ

n/a

130 – 158

101

140

D121S-AMZ

n/a

159 – 321

101

140

D136-AMZ

n/a

150 – 188

126

154

D136S-AMZ

n/a

189 - 392

126

154

D200-AMZ

n/a

270 - 306

152

229

D200S-AMZ

n/a

307 - 455

152

229

D200SX-AMZ

n/a

456 - 600

152

229

To size the TMZ and D-AMZ valves:

1.Determine the rating of the engine.

2.Use the table below to identify suitable valves.

3.Identify valves which can be supplied meeting the air intake hose
bore diameter where the valve will be mounted.

4.Generally, when more than one valve meets all requirements,
select the larger valve size to minimize engine air intake
restriction.

Refer to datasheets for detailed information.

Automatic & Loss of Pressure With Manual Start/Stop

Engine Power at Rated Speed

Air Intake Hose Bore

Naturally Aspirated

Turbocharged

Min

Max

Air Filter

HP

HP

in

in

TMZ (Bendix) with ¾” (21mm) Deep Flame Trap Housing

TMZ-121

TMZ-125

10 - 50

10 - 42

19/16

2¾

TMZ-122

TMZ-126

20 -72

20 -60

2

3⅛

TMZ-123

TMZ-127

30 - 97

30 - 80

2¼

3¼

TMZ-124

TMZ-128

40 - 125

40 - 104

2½

3¾

TMZ (Bendix) with 1½” (40mm) Deep Flame Trap Housing

TMZ-221

TMZ-225

10 - 50

10 - 42

19/16

2¾

TMZ-222

TMZ-226

20 -72

20 -60

2

3⅛

TMZ-223

TMZ-227

30 - 97

30 - 80

2¼

3¼

TMZ-224

TMZ-228

40 - 125

40 - 104

2½

3¾

TPZ (Bendix) Sizes

TMZ-131

n/a

10 - 50

10 - 42

19/16

2¾

TMZ-132

n/a

20 -72

20 -60

2

3⅛

TMZ-133

n/a

30 - 97

30 - 80

2¼

3¼

TMZ-134

n/a

40 - 125

40 - 104

2½

3¾

TMZ-301

n/a

54 - 161

54 - 134

2¾

4

TMZ-302

n/a

67 - 240

67 - 200

2¾

4¼

D-AP & D-AMP (Spindle) Sizes

D92-AMZ

n/a

107 - 135

3

4½

D92S-AMZ

n/a

136 - 255

3

4½

D102-AMZ

n/a

134 - 165

3½

4½

D102S-AMZ

n/a

166 - 335

3½

4½

D121-AMZ

n/a

174 - 212

4

5½

D121S-AMZ

n/a

213 – 430

4

5½

D136-AMZ

n/a

201 – 252

5

51/16

D136S-AMZ

n/a

253 - 525

5

51/16

D200-AMZ

n/a

362 - 410

6

9

D200S-AMZ

n/a

411 - 610

6

9

D200SX-AMZ

n/a

611 - 805

6

9

Fork lift trucks

Drilling rigs (onshore & offshore)

Drilling support equipment

Well servicing equipment

Refinery support equipment

Mining equipment

Construction equipment

Emergency response vehicles and equipment

Work boats

Barges

Automatic & Loss of
Pressure Close w/
Manual Start/Stop

Engine Power

Air Intake Hose Size

kW

HP

mm

in

TMZ w/ Flame Trap Housing
& Optional Integral Air Filter

7.5 - 93

10 - 125

51 - 96

2 - 3¾

TMZ (Bendix type)

7.5 - 179

10 - 240

51 - 108

2 - 4¼

D-AMZ (Spindle type)

80 - 600

107 - 805

76 - 229

3 - 9

Loss of Pressure Close

Pressure
Medium

Pressure

Maximum

TPZ

Air or Oil

1 bar

14.5 psi

10 bar

145 psi

D-AMZ

Air or Oil

2.5 bar

36 psi

8 bar

116 psi

D200-AMZ

Air or Oil

4 bar

60 psi

8 bar

116 psi

The Chalwyn TMZ Bendix type automatic valve and D-AMZ Spindle valves utilize two automatic closure methods. They are designed to automatically stop an engine by closing down the air intake in the event of an engine runaway or overspeed condition. These valves incorporate a failsafe loss of pressure override mechanism that will also close the valve automatically with the loss of oil or pneumatic pressure signal from the engine control system. A manual start override/emergency stop lever is also included.

Self-Contained Air Flow Operation

The Chalwyn TMZ Bendix and D-AMZ Spindle type automatic valves are designed to automatically stop an engine by closing down the air intake in the event of an engine runaway or overspeed condition. The valves are self-contained with flow actuated overspeed shutdown. They require no external electrical or mechanical input devices for the overspeed shutdown. The closing force is provided by the intake air flow passing through the valve. The valve closes automatically when the engine speed exceeds a pre-set point. The valve trip set point is calibrated on engine after the valve has been installed.

Failsafe Loss of Pressure Close

These valves include a failsafe loss of pressure close mechanism. The oil or air pressure control signal from the engine control system is connected to the pressure input port on the valve. When the engine operates outside of defined ranges in control variables such as low engine oil pressure, high coolant or high exhaust temperature, the system will vent the control signal pressure. The loss of pressure will trigger the TMZ or D-AMZ valve to close and shutdown the engine.

Valve Type

Actuator

Pressure Signal

Medium

Close Pressure

Maximum

TPZ

Cylinder

Air or Oil

1 bar (14.5 psi)

10 bar (145 psi)

D-AMZ

Rotary

8 bar (116 psi)

Manual Start Override/Emergency Stop Lever

A manual start override/emergency stop is included with each valve. The lever is used to open the valve to start the engine. Once the control signal pressure has built up after the engine is running the handle is released. The engine control signal pressure will latch open the loss of pressure actuator on the valve. The lever is also used to manually close the valve to stop the engine. The cable to the lever is available in lengths of 1.0, 1.5, 2.0, and 3.0 meters.

TMZ Valve Flame Trap Housing and Integral Air Filter

With the smaller range of TPZ valves, a ¾” (21MM) or 1½” (40mm) deep flame trap housings are available. The flame traps are customer supplied. Also, an optional integral air filter can be mounted directly on these TPZ valves. These options help reduce the size and complexity of installing the valve into engine packages where space is limited. This eliminates the requirement to find a location to support and mount a separate air filter and the associated air intake line upstream of the valve.

Valve Installation Accessories
There are installation kits for a wide variety of hose sizes available to help simplify installation of D Automatic Valves.

Technical Service Bulletins

POP-UP-CONTENT

Press Release

Chalwyn Product Overview

Overview

Overview

Overview

The Chalwyn TMZ Bendix type automatic valve and D-AMZ Spindle valves utilize two automatic closure methods. They are designed to automatically stop an engine by closing down the air intake in the event of an engine runaway or overspeed condition. These valves incorporate a failsafe loss of pressure override mechanism that will also close the valve automatically with the loss of oil or pneumatic pressure signal from the engine control system. A manual start override/emergency stop lever is also included.

In addition, a flame trap housing with an optional integral air filter can be mounted directly on the smaller sized TMZ valves to reduce the size and complexity of installing the valve into engine packages where space is limited. The flame trap housings are available in two depths: ¾” (21mm) & 1½” (40mm)

The TMZ or D-AMZ valves are selected by combination of the air intake line bore size and the engine power at its rated speed. The size range for the valves is indicated below.

Automatic & Loss of Pressure Close with Manual Start/Stop

Engine Power

Air Intake Hose Size

kW

HP

mm

in

TMZ w/ Flame Trap Housing& Optional Integral Air Filter

7.5 - 93

10 - 125

40 - 96

2 - 3¾

TMZ (Bendix type)

7.5 - 179

10 – 240

51 - 108

2 - 4¼

D-AMZ (Spindle type)

80 – 600

107 - 805

76 - 229

3 - 9

Features and Benefits

Easy to install

Automatic air flow actuated closure on overspeed

Loss of pressure to close override

Manual start override/emergency stop lever

Flame trap housing and integral air filter available for smaller TMZ sizes

Trip setpoint calibrated on engine

Valve Selection-Metric Units

To size the TMZ and D-AMZ valves:

1.Determine the rating of the engine.

2.Use the table below to identify suitable valves.

3.Identify valves which can be supplied meeting the air intake hose bore diameter where the valve will be mounted.

4.Generally, when more than one valve meets all requirements,
select the larger valve size to minimize engine air intake
restriction.

Refer to datasheets for detailed information.

Automatic & Loss of Pressure With Manual Start/Stop

Engine Power at Rated Speed

Air Intake Hose Bore

Naturally Aspirated

Turbocharged

Min

Max

Air Filter

kW

kW

mm

mm

TMZ (Bendix type) w/ ¾” (21mm) Deep Flame Trap Housing

TMZ-121

TMZ-125

7.5 - 38

7.5 - 32

40

70

TMZ-122

TMZ-126

15 - 54

15 - 45

51

80

TMZ-123

TMZ-127

22 - 72

22 - 60

57

83

TMZ-124

TMZ-128

30 - 93

30 - 78

64

96

TMZ (Bendix type) w/ 1½” (40mm) Deep Flame Trap Housing

TMZ-221

TMZ-225

7.5 - 38

7.5 - 32

40

70

TMZ-222

TMZ-226

15 - 54

15 - 45

51

80

TMZ-223

TMZ-227

22 - 72

22 - 60

57

83

TMZ-224

TMZ-228

30 - 93

30 - 78

64

96

TMZ (Bendix type)

TMZ-131

n/a

7.5 - 38

7.5 - 32

40

70

TMZ-132

n/a

15 - 54

15 - 45

51

80

TMZ-133

n/a

22 - 72

22 - 60

57

83

TMZ-134

n/a

30 - 93

30 - 78

64

96

TMZ-301

n/a

40 - 120

40 - 100

70

102

TMZ-302

n/a

50 - 179

50 - 149

70

108

D-AMZ (Spindle type)

D92-AMZ

n/a

80 - 101

76

115

D92S-AMZ

n/a

102 - 190

76

115

D102-AMZ

n/a

100 - 123

89

115

D102S-AMZ

n/a

124 - 250

89

115

D121-AMZ

n/a

130 – 158

101

140

D121S-AMZ

n/a

159 – 321

101

140

D136-AMZ

n/a

150 – 188

126

154

D136S-AMZ

n/a

189 - 392

126

154

D200-AMZ

n/a

270 - 306

152

229

D200S-AMZ

n/a

307 - 455

152

229

D200SX-AMZ

n/a

456 - 600

152

229

Valve Selection-English Units

To size the TMZ and D-AMZ valves:

1.Determine the rating of the engine.

2.Use the table below to identify suitable valves.

3.Identify valves which can be supplied meeting the air intake hose
bore diameter where the valve will be mounted.

4.Generally, when more than one valve meets all requirements,
select the larger valve size to minimize engine air intake
restriction.

Refer to datasheets for detailed information.

Automatic & Loss of Pressure With Manual Start/Stop

Engine Power at Rated Speed

Air Intake Hose Bore

Naturally Aspirated

Turbocharged

Min

Max

Air Filter

HP

HP

in

in

TMZ (Bendix) with ¾” (21mm) Deep Flame Trap Housing

TMZ-121

TMZ-125

10 - 50

10 - 42

19/16

2¾

TMZ-122

TMZ-126

20 -72

20 -60

2

3⅛

TMZ-123

TMZ-127

30 - 97

30 - 80

2¼

3¼

TMZ-124

TMZ-128

40 - 125

40 - 104

2½

3¾

TMZ (Bendix) with 1½” (40mm) Deep Flame Trap Housing

TMZ-221

TMZ-225

10 - 50

10 - 42

19/16

2¾

TMZ-222

TMZ-226

20 -72

20 -60

2

3⅛

TMZ-223

TMZ-227

30 - 97

30 - 80

2¼

3¼

TMZ-224

TMZ-228

40 - 125

40 - 104

2½

3¾

TPZ (Bendix) Sizes

TMZ-131

n/a

10 - 50

10 - 42

19/16

2¾

TMZ-132

n/a

20 -72

20 -60

2

3⅛

TMZ-133

n/a

30 - 97

30 - 80

2¼

3¼

TMZ-134

n/a

40 - 125

40 - 104

2½

3¾

TMZ-301

n/a

54 - 161

54 - 134

2¾

4

TMZ-302

n/a

67 - 240

67 - 200

2¾

4¼

D-AP & D-AMP (Spindle) Sizes

D92-AMZ

n/a

107 - 135

3

4½

D92S-AMZ

n/a

136 - 255

3

4½

D102-AMZ

n/a

134 - 165

3½

4½

D102S-AMZ

n/a

166 - 335

3½

4½

D121-AMZ

n/a

174 - 212

4

5½

D121S-AMZ

n/a

213 – 430

4

5½

D136-AMZ

n/a

201 – 252

5

51/16

D136S-AMZ

n/a

253 - 525

5

51/16

D200-AMZ

n/a

362 - 410

6

9

D200S-AMZ

n/a

411 - 610

6

9

D200SX-AMZ

n/a

611 - 805

6

9

Applications

Fork lift trucks

Drilling rigs (onshore & offshore)

Drilling support equipment

Well servicing equipment

Refinery support equipment

Mining equipment

Construction equipment

Emergency response vehicles and equipment

Work boats

Barges

Specifications

Automatic & Loss of
Pressure Close w/
Manual Start/Stop

Engine Power

Air Intake Hose Size

kW

HP

mm

in

TMZ w/ Flame Trap Housing
& Optional Integral Air Filter

7.5 - 93

10 - 125

51 - 96

2 - 3¾

TMZ (Bendix type)

7.5 - 179

10 - 240

51 - 108

2 - 4¼

D-AMZ (Spindle type)

80 - 600

107 - 805

76 - 229

3 - 9

Loss of Pressure Close

Pressure
Medium

Pressure

Maximum

TPZ

Air or Oil

1 bar

14.5 psi

10 bar

145 psi

D-AMZ

Air or Oil

2.5 bar

36 psi

8 bar

116 psi

D200-AMZ

Air or Oil

4 bar

60 psi

8 bar

116 psi

Operation

The Chalwyn TMZ Bendix type automatic valve and D-AMZ Spindle valves utilize two automatic closure methods. They are designed to automatically stop an engine by closing down the air intake in the event of an engine runaway or overspeed condition. These valves incorporate a failsafe loss of pressure override mechanism that will also close the valve automatically with the loss of oil or pneumatic pressure signal from the engine control system. A manual start override/emergency stop lever is also included.

Self-Contained Air Flow Operation

The Chalwyn TMZ Bendix and D-AMZ Spindle type automatic valves are designed to automatically stop an engine by closing down the air intake in the event of an engine runaway or overspeed condition. The valves are self-contained with flow actuated overspeed shutdown. They require no external electrical or mechanical input devices for the overspeed shutdown. The closing force is provided by the intake air flow passing through the valve. The valve closes automatically when the engine speed exceeds a pre-set point. The valve trip set point is calibrated on engine after the valve has been installed.

Failsafe Loss of Pressure Close

These valves include a failsafe loss of pressure close mechanism. The oil or air pressure control signal from the engine control system is connected to the pressure input port on the valve. When the engine operates outside of defined ranges in control variables such as low engine oil pressure, high coolant or high exhaust temperature, the system will vent the control signal pressure. The loss of pressure will trigger the TMZ or D-AMZ valve to close and shutdown the engine.

Valve Type

Actuator

Pressure Signal

Medium

Close Pressure

Maximum

TPZ

Cylinder

Air or Oil

1 bar (14.5 psi)

10 bar (145 psi)

D-AMZ

Rotary

8 bar (116 psi)

Manual Start Override/Emergency Stop Lever

A manual start override/emergency stop is included with each valve. The lever is used to open the valve to start the engine. Once the control signal pressure has built up after the engine is running the handle is released. The engine control signal pressure will latch open the loss of pressure actuator on the valve. The lever is also used to manually close the valve to stop the engine. The cable to the lever is available in lengths of 1.0, 1.5, 2.0, and 3.0 meters.

TMZ Valve Flame Trap Housing and Integral Air Filter

With the smaller range of TPZ valves, a ¾” (21MM) or 1½” (40mm) deep flame trap housings are available. The flame traps are customer supplied. Also, an optional integral air filter can be mounted directly on these TPZ valves. These options help reduce the size and complexity of installing the valve into engine packages where space is limited. This eliminates the requirement to find a location to support and mount a separate air filter and the associated air intake line upstream of the valve.

Accessories

Valve Installation Accessories
There are installation kits for a wide variety of hose sizes available to help simplify installation of D Automatic Valves.